Door-hinge



Patented Aug. 30, I898. C. DIETZ.

DOOR HINGE.

(No Model.)

a Invamf r a. s

" 'NITED STATES PATENT ()FFICE.

CHARLES DIETZ, OF CHICAGO, ILLINOIS.

DOOR-HINGE.

SPECIFICATION forming part of Letters Patent No. 609,878, dated August 30, 1898. Application filed February 28,1898. Serial No. 672,098. (NomodeL) To all whom it may concern.-

Be it known that I, CHARLES DIETZ, a citizen of the United States, residing at Chicago, in the county ofOobk and State: of Illinois, have invented certain new and useful Improvements in Hinges,"of which the following is a full, clear, and exact description, reference being hadlto the. accompanying drawings, forming part of this specification.

My invention relates. to certain new and useful improvements in hinges, and particularly of that type designed for use on doubleswing doors. 1

The object of this invention is to provide a door-hinge for double-swin g doors constructed and adapted to operate in such a manner that when the door has been opened and re' leased it is free to swing back into its normal closed position and will assume that position immediately without swinging back and forth for some time, as is now customary with the ordinary double-swing doors.

Another object of the invention is to provide hinges for a swing-door of such a character that the pressure required to openthe door need not be increased as the door is opened, but always remains substantially the same.

Another object of the invention is to pro-- vide a door-hinge constructed in such a manner that the door is lifted as it is swung open and slides down to its normal position, at which time the door has reached the lowest limit of its movement and is closed.

Another object of the invention is to provide a hinge for double-swing doors which locks the door to the door-frame, so that it cannot be removed while the hinge is fastened in place, but at the same time permits the free movement or swing of the door.

Another object of the invention is to provide a door-hingewhich constitutes a locking device to secure the door to the frame when the door is opened as well as when it is closed.

My invention also has in view other important objects, which will bepointed out here inafter in the detailed description thereof.

In the drawings, Figure 1 is an elevation, partly in section, showing myimproved doorhinge applied to a door. Fig. 2 is a similar view with the. door open. Fig. 3 is a perspective view of a door-frame, also showing the door open. Fig. 4: is a sectional view on the line 4: at of Fig. 2. Fig. 5 is a similar view showing thehinge constructed to swing the door in one'way only.

Referring to the drawings, in which like letters of reference denotecorresponding parts in all the figures, A designates a door-frame, and B adoor, it being understood that my invention is applicable to doors and door-frames of any known description. 111 some cases I have found it necessary, as shown in the drawings, to bevel the back edge of the door, as shown at a, and the upper edge, as shown at a, and also cut out the upper corner I) of the door and secure it in the corresponding corner of the frame, because the construction of the hinge is such that the door is given an up- Wardmovement coincident with its swinging movement and the upper edgeof the door 'andthe corner thereof must be formed in such a manner that the doorin its upward movement will clear the frame.

My invention is particularly adaptable to double swing-doors, and for this reason I will now describe the construction, arrangement, and operation of a hinge of this character. The hinge comprises two parts or castings, which may be termed male or female, one part 0 being provided with twin pintles 0, adapted to fit and operate in corresponding sockets c. in the other part D. The pintles are substantially circular in cross-section and adapted to fit snugly in the sockets 0', these sockets being'open on one side, so that the pintles may slip in and out freely. The walls of the sockets at the upper and lower ends are extended inward to form retainingguides d, and as the distance between these guides is less than the distance between the outer ends of the circular pintles the lower ends of said pintles are cut out and squared on their outer sides, as indicated at d, to permit the lower retaininguide d to slip off of the pintles. As the door is swung one socket slips oil? of its pintle, while at the same time the other socket slips around its pintle to take a permanent hold thereon, and for this reason also it is important that the walls of the lower part of the sockets should be continued in the form of retaining-guides and the outer sides of the lower ends of the pintles should be cut away, so that While the vIO sockets can be swung outwardly away from the pintles when the door is in its normal position at right angles to the frame immediately after the door is swung to one side or theother the retaining-guide will slip from its position in alinement with the outer side of the lower end of the pintle and take hold thereof to hold the door rigidly in place on the pintle. The fixed or casing member of the hinge comprises a back plate E, through which the screws pass, securing this portion to the door-frame, and forwardly-projecting arms 6, which carry the pintles. The female portion of the hinge is provided with a hood F at the top, the sockets c to receive the pintles, and the socket f on its opposite side and between the pintle-sockets to receive the door.

The arms e are provided with cam-faces G, and inclined slots g are provided in the socketplate or female portion of the hinge D, these slots being adapted to receive the cams G when the door is swung from side to side.

These slots are inclined downwardly, and the upper inclined wall of each slot is the operative portion thereof and rides on its corresponding cam G when the door is swung,

thereby raising the door, and when the pressure on the door is released its weight will cause it to swing backward into its normal position, the upper inclined edge of the slot riding down over the cam Gaceelerating the movement of the door and also bringing it to lowest limit oi its movement instead of allowing the door to swing back and forth. It

is obvious, therefore, that the slots in the socket-plate, may be of a different character than that shown, as it'is only essential to provide inclined edges on the socket-plate to 'ride on the cams G.

Ill assembling the parts and. supporting the (1001: in place the pintle-plates are secured i their' 9 sit-ion in the door-frame, an'

' P13. 6 ed on the -upward coincidentally with its swinging movement. The upper edge of the door bea ing beveled and the corner being cut out in the manner heretofore described permits of what. I egnlm Patent, ISL

the door being lifted without binding against the frame, and the pressure required to open the door does not increase as the door opens, as is customary with spring-hinges, but always remains the same in degree from the beginning of the swinging movement until the door reaches the outward limit of its swing.

When the door is opened, it will of course have been lifted to the limit of its upward movement, and the sockets are therefore open at their bottom to receive the lower end of the pintles, which may pass therethrough. When the door is opened in this manner, it is secured against displacement by the engagement of the inclined walls of the slot in the socket-plate with the arm on the pintle-plate and the engagement of the pintle in the lower portion of the socket with the retainingguide and the other walls of the socket. Y The distance between the cut-out sides of the pintle is sufficiently less than the distance between the retaining-guides of the sockets to permit one guide to swing free of its pintle and without catching or engaging the same, While the other guide immediately engages and takes hold of its pintle. The lower ends of the pintles do not necessarily assist in holding the door in place when the door is in its normal position; but immediately the door is swung to one side the lower end of the pintle on that side is engaged by the lower Walls of the socket in such a way as to hold When the door is in its normal position, the

upper ends of the pintles are located within the hooded upper ends of the sockets, and

the door is thereby prevented from displaceinent.

It will be observed by those skilled 1n the art that if my lning'e is divided centrally and longitudinally one-half thereof will cqllstlt llte a; hinge for a. door Swinging in one dr rectlon,

Qt necesconsider 11:

, and desulre to Secure b Letcers 1. In a door-hinge, the combination with a plate having a socket therein, the wall of which is extended to form a retaining-guide,

of a pintle for said socket having its lower end cut out on one side, substantially as and for the purpose described.

2. In a door-hinge, the combination with a cam and a pintle having its lower end cut out on one side, of a socket-plate having its socketwall extended to form a guide, said plate having an inclined slot therein, the upper wall of said slot being constructed to ride on the cam of the pintle, substantially as described.

3. In a door-hinge, the combination with twin pintles having cams thereon, of a plate provided with sockets to receive the pintles and having inclined Walls thereon to ride on the cams to lift the door when it is swung, substantially as described.

4. In a door-hinge, the combination with twin pintles having their lower ends out out on their outer sides, of a plate provided with sockets to receive the pintles and retainingguides normally clearing the cut-out ends of 

